Must be a bug with Jax or something. For me it worked well so far with everyone I've tried.

I think you have to compete the tower or lose. If you quit then it does not count.

Nah this is wrong. You don't even need to finish the match.

Its a bug.ive done a few matches and quit multiple times and it always registered everything

I noticed something similar when the towers count up bonus points for Flawless Victories at the end. Sometimes I'll get three or more Flawless rounds over the course of a tower but I don't think it's ever counted more than one.

What I found out: punishing Krushing Blows counts most of the time, but Krushing Blows depending on other conditions don't count and this is ridiculous. NRS need to fix it.

I played Shao Kahn. He has five Krushing Blows. So I need maybe 5-10 matches to complete the 25 KB mark. But three of them has special conditions and won't count. Only two are counting: the Uppercut and the Hammer Throw. So I need to do 13-25 matches and need to hope the counter does his job correct. No, just no.

I'm having the same experience with Skarlet, ATM. I've played (or the AI has) hundreds of matches with Skarlet in the Towers of Time and my Krushing Blows counter is at like 4. There's no way that's accurate.

I see my mistake, it seems to be working as intended. It looks like the AI almost never does Krushing Blows, and the counter is reset when the tower spawns, so it's not calculating all Krushing Blows you've ever done, just since the tower has spawned. I've found the easiest way to get these it to go into a Very Easy Klassic Tower, perform 2 Krushing Blows right away, Pause, Restart Match and repeat. This seems to speed things up quite a bit.